1 /* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger. 2 3 Copyright (C) 2003-2014 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #include "defs.h" 21 #include "gdbcore.h" 22 #include <string.h> 23 #include "regcache.h" 24 #include "mn10300-tdep.h" 25 #include "gdb_assert.h" 26 #include "bfd.h" 27 #include "elf-bfd.h" 28 #include "osabi.h" 29 #include "regset.h" 30 #include "solib-svr4.h" 31 #include "frame.h" 32 #include "trad-frame.h" 33 #include "tramp-frame.h" 34 #include "linux-tdep.h" 35 36 #include <stdlib.h> 37 38 /* Transliterated from <asm-mn10300/elf.h>... */ 39 #define MN10300_ELF_NGREG 28 40 #define MN10300_ELF_NFPREG 32 41 42 typedef gdb_byte mn10300_elf_greg_t[4]; 43 typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG]; 44 45 typedef gdb_byte mn10300_elf_fpreg_t[4]; 46 typedef struct 47 { 48 mn10300_elf_fpreg_t fpregs[MN10300_ELF_NFPREG]; 49 gdb_byte fpcr[4]; 50 } mn10300_elf_fpregset_t; 51 52 /* elf_gregset_t register indices stolen from include/asm-mn10300/ptrace.h. */ 53 #define MN10300_ELF_GREGSET_T_REG_INDEX_A3 0 54 #define MN10300_ELF_GREGSET_T_REG_INDEX_A2 1 55 #define MN10300_ELF_GREGSET_T_REG_INDEX_D3 2 56 #define MN10300_ELF_GREGSET_T_REG_INDEX_D2 3 57 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCVF 4 58 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRL 5 59 #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRH 6 60 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ 7 61 #define MN10300_ELF_GREGSET_T_REG_INDEX_E1 8 62 #define MN10300_ELF_GREGSET_T_REG_INDEX_E0 9 63 #define MN10300_ELF_GREGSET_T_REG_INDEX_E7 10 64 #define MN10300_ELF_GREGSET_T_REG_INDEX_E6 11 65 #define MN10300_ELF_GREGSET_T_REG_INDEX_E5 12 66 #define MN10300_ELF_GREGSET_T_REG_INDEX_E4 13 67 #define MN10300_ELF_GREGSET_T_REG_INDEX_E3 14 68 #define MN10300_ELF_GREGSET_T_REG_INDEX_E2 15 69 #define MN10300_ELF_GREGSET_T_REG_INDEX_SP 16 70 #define MN10300_ELF_GREGSET_T_REG_INDEX_LAR 17 71 #define MN10300_ELF_GREGSET_T_REG_INDEX_LIR 18 72 #define MN10300_ELF_GREGSET_T_REG_INDEX_MDR 19 73 #define MN10300_ELF_GREGSET_T_REG_INDEX_A1 20 74 #define MN10300_ELF_GREGSET_T_REG_INDEX_A0 21 75 #define MN10300_ELF_GREGSET_T_REG_INDEX_D1 22 76 #define MN10300_ELF_GREGSET_T_REG_INDEX_D0 23 77 #define MN10300_ELF_GREGSET_T_REG_INDEX_ORIG_D0 24 78 #define MN10300_ELF_GREGSET_T_REG_INDEX_EPSW 25 79 #define MN10300_ELF_GREGSET_T_REG_INDEX_PC 26 80 81 /* New gdbarch API for corefile registers. 82 Given a section name and size, create a struct reg object 83 with a supply_register and a collect_register method. */ 84 85 /* Copy register value of REGNUM from regset to regcache. 86 If REGNUM is -1, do this for all gp registers in regset. */ 87 88 static void 89 am33_supply_gregset_method (const struct regset *regset, 90 struct regcache *regcache, 91 int regnum, const void *gregs, size_t len) 92 { 93 char zerobuf[MAX_REGISTER_SIZE]; 94 const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs; 95 int i; 96 97 gdb_assert (len == sizeof (mn10300_elf_gregset_t)); 98 99 switch (regnum) { 100 case E_D0_REGNUM: 101 regcache_raw_supply (regcache, E_D0_REGNUM, 102 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0)); 103 break; 104 case E_D1_REGNUM: 105 regcache_raw_supply (regcache, E_D1_REGNUM, 106 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1)); 107 break; 108 case E_D2_REGNUM: 109 regcache_raw_supply (regcache, E_D2_REGNUM, 110 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2)); 111 break; 112 case E_D3_REGNUM: 113 regcache_raw_supply (regcache, E_D3_REGNUM, 114 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3)); 115 break; 116 case E_A0_REGNUM: 117 regcache_raw_supply (regcache, E_A0_REGNUM, 118 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0)); 119 break; 120 case E_A1_REGNUM: 121 regcache_raw_supply (regcache, E_A1_REGNUM, 122 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1)); 123 break; 124 case E_A2_REGNUM: 125 regcache_raw_supply (regcache, E_A2_REGNUM, 126 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2)); 127 break; 128 case E_A3_REGNUM: 129 regcache_raw_supply (regcache, E_A3_REGNUM, 130 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3)); 131 break; 132 case E_SP_REGNUM: 133 regcache_raw_supply (regcache, E_SP_REGNUM, 134 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP)); 135 break; 136 case E_PC_REGNUM: 137 regcache_raw_supply (regcache, E_PC_REGNUM, 138 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC)); 139 break; 140 case E_MDR_REGNUM: 141 regcache_raw_supply (regcache, E_MDR_REGNUM, 142 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR)); 143 break; 144 case E_PSW_REGNUM: 145 regcache_raw_supply (regcache, E_PSW_REGNUM, 146 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW)); 147 break; 148 case E_LIR_REGNUM: 149 regcache_raw_supply (regcache, E_LIR_REGNUM, 150 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR)); 151 break; 152 case E_LAR_REGNUM: 153 regcache_raw_supply (regcache, E_LAR_REGNUM, 154 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR)); 155 break; 156 case E_MDRQ_REGNUM: 157 regcache_raw_supply (regcache, E_MDRQ_REGNUM, 158 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ)); 159 break; 160 case E_E0_REGNUM: 161 regcache_raw_supply (regcache, E_E0_REGNUM, 162 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0)); 163 break; 164 case E_E1_REGNUM: 165 regcache_raw_supply (regcache, E_E1_REGNUM, 166 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1)); 167 break; 168 case E_E2_REGNUM: 169 regcache_raw_supply (regcache, E_E2_REGNUM, 170 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2)); 171 break; 172 case E_E3_REGNUM: 173 regcache_raw_supply (regcache, E_E3_REGNUM, 174 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3)); 175 break; 176 case E_E4_REGNUM: 177 regcache_raw_supply (regcache, E_E4_REGNUM, 178 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4)); 179 break; 180 case E_E5_REGNUM: 181 regcache_raw_supply (regcache, E_E5_REGNUM, 182 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5)); 183 break; 184 case E_E6_REGNUM: 185 regcache_raw_supply (regcache, E_E6_REGNUM, 186 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6)); 187 break; 188 case E_E7_REGNUM: 189 regcache_raw_supply (regcache, E_E7_REGNUM, 190 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7)); 191 break; 192 193 /* ssp, msp, and usp are inaccessible. */ 194 case E_E8_REGNUM: 195 memset (zerobuf, 0, MAX_REGISTER_SIZE); 196 regcache_raw_supply (regcache, E_E8_REGNUM, zerobuf); 197 break; 198 case E_E9_REGNUM: 199 memset (zerobuf, 0, MAX_REGISTER_SIZE); 200 regcache_raw_supply (regcache, E_E9_REGNUM, zerobuf); 201 break; 202 case E_E10_REGNUM: 203 memset (zerobuf, 0, MAX_REGISTER_SIZE); 204 regcache_raw_supply (regcache, E_E10_REGNUM, zerobuf); 205 206 break; 207 case E_MCRH_REGNUM: 208 regcache_raw_supply (regcache, E_MCRH_REGNUM, 209 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH)); 210 break; 211 case E_MCRL_REGNUM: 212 regcache_raw_supply (regcache, E_MCRL_REGNUM, 213 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL)); 214 break; 215 case E_MCVF_REGNUM: 216 regcache_raw_supply (regcache, E_MCVF_REGNUM, 217 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF)); 218 break; 219 case E_FPCR_REGNUM: 220 /* FPCR is numbered among the GP regs, but handled as an FP reg. 221 Do nothing. */ 222 break; 223 case E_FPCR_REGNUM + 1: 224 /* The two unused registers beyond fpcr are inaccessible. */ 225 memset (zerobuf, 0, MAX_REGISTER_SIZE); 226 regcache_raw_supply (regcache, E_FPCR_REGNUM + 1, zerobuf); 227 break; 228 case E_FPCR_REGNUM + 2: 229 memset (zerobuf, 0, MAX_REGISTER_SIZE); 230 regcache_raw_supply (regcache, E_FPCR_REGNUM + 2, zerobuf); 231 break; 232 default: /* An error, obviously, but should we error out? */ 233 break; 234 case -1: 235 for (i = 0; i < MN10300_ELF_NGREG; i++) 236 am33_supply_gregset_method (regset, regcache, i, gregs, len); 237 break; 238 } 239 return; 240 } 241 242 /* Copy fp register value of REGNUM from regset to regcache. 243 If REGNUM is -1, do this for all fp registers in regset. */ 244 245 static void 246 am33_supply_fpregset_method (const struct regset *regset, 247 struct regcache *regcache, 248 int regnum, const void *fpregs, size_t len) 249 { 250 const mn10300_elf_fpregset_t *fpregset = fpregs; 251 252 gdb_assert (len == sizeof (mn10300_elf_fpregset_t)); 253 254 if (regnum == -1) 255 { 256 int i; 257 258 for (i = 0; i < MN10300_ELF_NFPREG; i++) 259 am33_supply_fpregset_method (regset, regcache, 260 E_FS0_REGNUM + i, fpregs, len); 261 am33_supply_fpregset_method (regset, regcache, 262 E_FPCR_REGNUM, fpregs, len); 263 } 264 else if (regnum == E_FPCR_REGNUM) 265 regcache_raw_supply (regcache, E_FPCR_REGNUM, 266 &fpregset->fpcr); 267 else if (E_FS0_REGNUM <= regnum 268 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG) 269 regcache_raw_supply (regcache, regnum, 270 &fpregset->fpregs[regnum - E_FS0_REGNUM]); 271 272 return; 273 } 274 275 /* Copy register values from regcache to regset. */ 276 277 static void 278 am33_collect_gregset_method (const struct regset *regset, 279 const struct regcache *regcache, 280 int regnum, void *gregs, size_t len) 281 { 282 mn10300_elf_gregset_t *regp = gregs; 283 int i; 284 285 gdb_assert (len == sizeof (mn10300_elf_gregset_t)); 286 287 switch (regnum) { 288 case E_D0_REGNUM: 289 regcache_raw_collect (regcache, E_D0_REGNUM, 290 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0)); 291 break; 292 case E_D1_REGNUM: 293 regcache_raw_collect (regcache, E_D1_REGNUM, 294 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1)); 295 break; 296 case E_D2_REGNUM: 297 regcache_raw_collect (regcache, E_D2_REGNUM, 298 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2)); 299 break; 300 case E_D3_REGNUM: 301 regcache_raw_collect (regcache, E_D3_REGNUM, 302 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3)); 303 break; 304 case E_A0_REGNUM: 305 regcache_raw_collect (regcache, E_A0_REGNUM, 306 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0)); 307 break; 308 case E_A1_REGNUM: 309 regcache_raw_collect (regcache, E_A1_REGNUM, 310 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1)); 311 break; 312 case E_A2_REGNUM: 313 regcache_raw_collect (regcache, E_A2_REGNUM, 314 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2)); 315 break; 316 case E_A3_REGNUM: 317 regcache_raw_collect (regcache, E_A3_REGNUM, 318 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3)); 319 break; 320 case E_SP_REGNUM: 321 regcache_raw_collect (regcache, E_SP_REGNUM, 322 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP)); 323 break; 324 case E_PC_REGNUM: 325 regcache_raw_collect (regcache, E_PC_REGNUM, 326 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC)); 327 break; 328 case E_MDR_REGNUM: 329 regcache_raw_collect (regcache, E_MDR_REGNUM, 330 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR)); 331 break; 332 case E_PSW_REGNUM: 333 regcache_raw_collect (regcache, E_PSW_REGNUM, 334 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW)); 335 break; 336 case E_LIR_REGNUM: 337 regcache_raw_collect (regcache, E_LIR_REGNUM, 338 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR)); 339 break; 340 case E_LAR_REGNUM: 341 regcache_raw_collect (regcache, E_LAR_REGNUM, 342 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR)); 343 break; 344 case E_MDRQ_REGNUM: 345 regcache_raw_collect (regcache, E_MDRQ_REGNUM, 346 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ)); 347 break; 348 case E_E0_REGNUM: 349 regcache_raw_collect (regcache, E_E0_REGNUM, 350 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0)); 351 break; 352 case E_E1_REGNUM: 353 regcache_raw_collect (regcache, E_E1_REGNUM, 354 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1)); 355 break; 356 case E_E2_REGNUM: 357 regcache_raw_collect (regcache, E_E2_REGNUM, 358 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2)); 359 break; 360 case E_E3_REGNUM: 361 regcache_raw_collect (regcache, E_E3_REGNUM, 362 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3)); 363 break; 364 case E_E4_REGNUM: 365 regcache_raw_collect (regcache, E_E4_REGNUM, 366 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4)); 367 break; 368 case E_E5_REGNUM: 369 regcache_raw_collect (regcache, E_E5_REGNUM, 370 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5)); 371 break; 372 case E_E6_REGNUM: 373 regcache_raw_collect (regcache, E_E6_REGNUM, 374 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6)); 375 break; 376 case E_E7_REGNUM: 377 regcache_raw_collect (regcache, E_E7_REGNUM, 378 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7)); 379 break; 380 381 /* ssp, msp, and usp are inaccessible. */ 382 case E_E8_REGNUM: 383 /* The gregset struct has noplace to put this: do nothing. */ 384 break; 385 case E_E9_REGNUM: 386 /* The gregset struct has noplace to put this: do nothing. */ 387 break; 388 case E_E10_REGNUM: 389 /* The gregset struct has noplace to put this: do nothing. */ 390 break; 391 case E_MCRH_REGNUM: 392 regcache_raw_collect (regcache, E_MCRH_REGNUM, 393 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH)); 394 break; 395 case E_MCRL_REGNUM: 396 regcache_raw_collect (regcache, E_MCRL_REGNUM, 397 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL)); 398 break; 399 case E_MCVF_REGNUM: 400 regcache_raw_collect (regcache, E_MCVF_REGNUM, 401 (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF)); 402 break; 403 case E_FPCR_REGNUM: 404 /* FPCR is numbered among the GP regs, but handled as an FP reg. 405 Do nothing. */ 406 break; 407 case E_FPCR_REGNUM + 1: 408 /* The gregset struct has noplace to put this: do nothing. */ 409 break; 410 case E_FPCR_REGNUM + 2: 411 /* The gregset struct has noplace to put this: do nothing. */ 412 break; 413 default: /* An error, obviously, but should we error out? */ 414 break; 415 case -1: 416 for (i = 0; i < MN10300_ELF_NGREG; i++) 417 am33_collect_gregset_method (regset, regcache, i, gregs, len); 418 break; 419 } 420 return; 421 } 422 423 /* Copy fp register values from regcache to regset. */ 424 425 static void 426 am33_collect_fpregset_method (const struct regset *regset, 427 const struct regcache *regcache, 428 int regnum, void *fpregs, size_t len) 429 { 430 mn10300_elf_fpregset_t *fpregset = fpregs; 431 432 gdb_assert (len == sizeof (mn10300_elf_fpregset_t)); 433 434 if (regnum == -1) 435 { 436 int i; 437 for (i = 0; i < MN10300_ELF_NFPREG; i++) 438 am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i, 439 fpregs, len); 440 am33_collect_fpregset_method (regset, regcache, 441 E_FPCR_REGNUM, fpregs, len); 442 } 443 else if (regnum == E_FPCR_REGNUM) 444 regcache_raw_collect (regcache, E_FPCR_REGNUM, 445 &fpregset->fpcr); 446 else if (E_FS0_REGNUM <= regnum 447 && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG) 448 regcache_raw_collect (regcache, regnum, 449 &fpregset->fpregs[regnum - E_FS0_REGNUM]); 450 451 return; 452 } 453 454 /* Create a struct regset from a corefile register section. */ 455 456 static const struct regset * 457 am33_regset_from_core_section (struct gdbarch *gdbarch, 458 const char *sect_name, 459 size_t sect_size) 460 { 461 /* We will call regset_alloc, and pass the names of the supply and 462 collect methods. */ 463 464 if (sect_size == sizeof (mn10300_elf_fpregset_t)) 465 return regset_alloc (gdbarch, 466 am33_supply_fpregset_method, 467 am33_collect_fpregset_method); 468 else 469 return regset_alloc (gdbarch, 470 am33_supply_gregset_method, 471 am33_collect_gregset_method); 472 } 473 474 static void 475 am33_linux_sigframe_cache_init (const struct tramp_frame *self, 476 struct frame_info *this_frame, 477 struct trad_frame_cache *this_cache, 478 CORE_ADDR func); 479 480 static const struct tramp_frame am33_linux_sigframe = { 481 SIGTRAMP_FRAME, 482 1, 483 { 484 /* mov 119,d0 */ 485 { 0x2c, -1 }, 486 { 0x77, -1 }, 487 { 0x00, -1 }, 488 /* syscall 0 */ 489 { 0xf0, -1 }, 490 { 0xe0, -1 }, 491 { TRAMP_SENTINEL_INSN, -1 } 492 }, 493 am33_linux_sigframe_cache_init 494 }; 495 496 static const struct tramp_frame am33_linux_rt_sigframe = { 497 SIGTRAMP_FRAME, 498 1, 499 { 500 /* mov 173,d0 */ 501 { 0x2c, -1 }, 502 { 0xad, -1 }, 503 { 0x00, -1 }, 504 /* syscall 0 */ 505 { 0xf0, -1 }, 506 { 0xe0, -1 }, 507 { TRAMP_SENTINEL_INSN, -1 } 508 }, 509 am33_linux_sigframe_cache_init 510 }; 511 512 /* Relevant struct definitions for signal handling... 513 514 From arch/mn10300/kernel/sigframe.h: 515 516 struct sigframe 517 { 518 void (*pretcode)(void); 519 int sig; 520 struct sigcontext *psc; 521 struct sigcontext sc; 522 struct fpucontext fpuctx; 523 unsigned long extramask[_NSIG_WORDS-1]; 524 char retcode[8]; 525 }; 526 527 struct rt_sigframe 528 { 529 void (*pretcode)(void); 530 int sig; 531 struct siginfo *pinfo; 532 void *puc; 533 struct siginfo info; 534 struct ucontext uc; 535 struct fpucontext fpuctx; 536 char retcode[8]; 537 }; 538 539 From include/asm-mn10300/ucontext.h: 540 541 struct ucontext { 542 unsigned long uc_flags; 543 struct ucontext *uc_link; 544 stack_t uc_stack; 545 struct sigcontext uc_mcontext; 546 sigset_t uc_sigmask; 547 }; 548 549 From include/asm-mn10300/sigcontext.h: 550 551 struct fpucontext { 552 unsigned long fs[32]; 553 unsigned long fpcr; 554 }; 555 556 struct sigcontext { 557 unsigned long d0; 558 unsigned long d1; 559 unsigned long d2; 560 unsigned long d3; 561 unsigned long a0; 562 unsigned long a1; 563 unsigned long a2; 564 unsigned long a3; 565 unsigned long e0; 566 unsigned long e1; 567 unsigned long e2; 568 unsigned long e3; 569 unsigned long e4; 570 unsigned long e5; 571 unsigned long e6; 572 unsigned long e7; 573 unsigned long lar; 574 unsigned long lir; 575 unsigned long mdr; 576 unsigned long mcvf; 577 unsigned long mcrl; 578 unsigned long mcrh; 579 unsigned long mdrq; 580 unsigned long sp; 581 unsigned long epsw; 582 unsigned long pc; 583 struct fpucontext *fpucontext; 584 unsigned long oldmask; 585 }; */ 586 587 588 #define AM33_SIGCONTEXT_D0 0 589 #define AM33_SIGCONTEXT_D1 4 590 #define AM33_SIGCONTEXT_D2 8 591 #define AM33_SIGCONTEXT_D3 12 592 #define AM33_SIGCONTEXT_A0 16 593 #define AM33_SIGCONTEXT_A1 20 594 #define AM33_SIGCONTEXT_A2 24 595 #define AM33_SIGCONTEXT_A3 28 596 #define AM33_SIGCONTEXT_E0 32 597 #define AM33_SIGCONTEXT_E1 36 598 #define AM33_SIGCONTEXT_E2 40 599 #define AM33_SIGCONTEXT_E3 44 600 #define AM33_SIGCONTEXT_E4 48 601 #define AM33_SIGCONTEXT_E5 52 602 #define AM33_SIGCONTEXT_E6 56 603 #define AM33_SIGCONTEXT_E7 60 604 #define AM33_SIGCONTEXT_LAR 64 605 #define AM33_SIGCONTEXT_LIR 68 606 #define AM33_SIGCONTEXT_MDR 72 607 #define AM33_SIGCONTEXT_MCVF 76 608 #define AM33_SIGCONTEXT_MCRL 80 609 #define AM33_SIGCONTEXT_MCRH 84 610 #define AM33_SIGCONTEXT_MDRQ 88 611 #define AM33_SIGCONTEXT_SP 92 612 #define AM33_SIGCONTEXT_EPSW 96 613 #define AM33_SIGCONTEXT_PC 100 614 #define AM33_SIGCONTEXT_FPUCONTEXT 104 615 616 617 static void 618 am33_linux_sigframe_cache_init (const struct tramp_frame *self, 619 struct frame_info *this_frame, 620 struct trad_frame_cache *this_cache, 621 CORE_ADDR func) 622 { 623 CORE_ADDR sc_base, fpubase; 624 int i; 625 626 sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM); 627 if (self == &am33_linux_sigframe) 628 { 629 sc_base += 8; 630 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4); 631 } 632 else 633 { 634 sc_base += 12; 635 sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4); 636 sc_base += 20; 637 } 638 639 trad_frame_set_reg_addr (this_cache, E_D0_REGNUM, 640 sc_base + AM33_SIGCONTEXT_D0); 641 trad_frame_set_reg_addr (this_cache, E_D1_REGNUM, 642 sc_base + AM33_SIGCONTEXT_D1); 643 trad_frame_set_reg_addr (this_cache, E_D2_REGNUM, 644 sc_base + AM33_SIGCONTEXT_D2); 645 trad_frame_set_reg_addr (this_cache, E_D3_REGNUM, 646 sc_base + AM33_SIGCONTEXT_D3); 647 648 trad_frame_set_reg_addr (this_cache, E_A0_REGNUM, 649 sc_base + AM33_SIGCONTEXT_A0); 650 trad_frame_set_reg_addr (this_cache, E_A1_REGNUM, 651 sc_base + AM33_SIGCONTEXT_A1); 652 trad_frame_set_reg_addr (this_cache, E_A2_REGNUM, 653 sc_base + AM33_SIGCONTEXT_A2); 654 trad_frame_set_reg_addr (this_cache, E_A3_REGNUM, 655 sc_base + AM33_SIGCONTEXT_A3); 656 657 trad_frame_set_reg_addr (this_cache, E_E0_REGNUM, 658 sc_base + AM33_SIGCONTEXT_E0); 659 trad_frame_set_reg_addr (this_cache, E_E1_REGNUM, 660 sc_base + AM33_SIGCONTEXT_E1); 661 trad_frame_set_reg_addr (this_cache, E_E2_REGNUM, 662 sc_base + AM33_SIGCONTEXT_E2); 663 trad_frame_set_reg_addr (this_cache, E_E3_REGNUM, 664 sc_base + AM33_SIGCONTEXT_E3); 665 trad_frame_set_reg_addr (this_cache, E_E4_REGNUM, 666 sc_base + AM33_SIGCONTEXT_E4); 667 trad_frame_set_reg_addr (this_cache, E_E5_REGNUM, 668 sc_base + AM33_SIGCONTEXT_E5); 669 trad_frame_set_reg_addr (this_cache, E_E6_REGNUM, 670 sc_base + AM33_SIGCONTEXT_E6); 671 trad_frame_set_reg_addr (this_cache, E_E7_REGNUM, 672 sc_base + AM33_SIGCONTEXT_E7); 673 674 trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM, 675 sc_base + AM33_SIGCONTEXT_LAR); 676 trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM, 677 sc_base + AM33_SIGCONTEXT_LIR); 678 trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM, 679 sc_base + AM33_SIGCONTEXT_MDR); 680 trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM, 681 sc_base + AM33_SIGCONTEXT_MCVF); 682 trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM, 683 sc_base + AM33_SIGCONTEXT_MCRL); 684 trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM, 685 sc_base + AM33_SIGCONTEXT_MDRQ); 686 687 trad_frame_set_reg_addr (this_cache, E_SP_REGNUM, 688 sc_base + AM33_SIGCONTEXT_SP); 689 trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM, 690 sc_base + AM33_SIGCONTEXT_EPSW); 691 trad_frame_set_reg_addr (this_cache, E_PC_REGNUM, 692 sc_base + AM33_SIGCONTEXT_PC); 693 694 fpubase = get_frame_memory_unsigned (this_frame, 695 sc_base + AM33_SIGCONTEXT_FPUCONTEXT, 696 4); 697 if (fpubase) 698 { 699 for (i = 0; i < 32; i++) 700 { 701 trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i, 702 fpubase + 4 * i); 703 } 704 trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32); 705 } 706 707 trad_frame_set_id (this_cache, frame_id_build (sc_base, func)); 708 } 709 710 /* AM33 GNU/Linux osabi has been recognized. 711 Now's our chance to register our corefile handling. */ 712 713 static void 714 am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch) 715 { 716 linux_init_abi (info, gdbarch); 717 718 set_gdbarch_regset_from_core_section (gdbarch, 719 am33_regset_from_core_section); 720 set_solib_svr4_fetch_link_map_offsets 721 (gdbarch, svr4_ilp32_fetch_link_map_offsets); 722 723 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe); 724 tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe); 725 } 726 727 /* Provide a prototype to silence -Wmissing-prototypes. */ 728 extern initialize_file_ftype _initialize_mn10300_linux_tdep; 729 730 void 731 _initialize_mn10300_linux_tdep (void) 732 { 733 gdbarch_register_osabi (bfd_arch_mn10300, 0, 734 GDB_OSABI_LINUX, am33_linux_init_osabi); 735 } 736 737